A man claiming to be the son of a former Crown Prince of Saudi Arabia filed a petition Tuesday asking New York Presbyterian/Weill Cornell Medical Center to turn over his deceased dad’s royal tissue sample.

Talal Bin Sultan Bin Abdul-Aziz Al Saud claims in papers filed in Manhattan Supreme Court that all he needs is a DNA test to show he’s one of Sultan bin Abdul-Aziz Al Saud’s children. Prince Sultan served as crown prince from 2005 to 2011, the year that he died. He was at least 80 when he died. He reportedly had 32 children by multiple wives. His fortune was estimated to be anywhere from $1.2 billion to $270 billion.

After Prince Sultan died of cancer at New York Presbyterian, the hospital preserved some of his DNA as part of its normal routine, according to papers.

Abdul-Aziz writes that the results of the DNA test are critical to a paternity case he will file in Lebanon.

In papers, he claims his royal dad and Syrian mother, Hanaa Faek El Mghayzel, married in 1982. Abduz-Aziz was born two years later.

His parents later divorced and the mother returned to Syria in 1996, papers read.

Hospital protocol requires a judge issue an order before releasing a tissue sample.

Calls to an attorney for Abdul-Aziz and the hospital were not returned.